class Car():
    def __init__(self, make, model, year): # 初始化描述汽车的属性

        self.make = make
        self.model = model
        self.year = year
        self.odometer_reading = 0

    def get_descriptive_name(self): # 返回整洁的描述性信息
        long_name = str(self.year) + ' ' + self.make + ' ' + self.model
        return long_name.title()

    def read_odometer(self): # 打印一条指出汽车里程的消息
        print("This car has " + str(self.odometer_reading) + " miles on it.")

    def update_odometer(self, mileage): # 设置里程表读数
        if mileage >= self.odometer_reading:
            self.odometer_reading = mileage
        else:
            print("You can't roll back an odometer!")

    def increment_odometer(self, miles): # 增加里程
        self.odometer_reading += miles


my_new_car = Car('xiaomi','su7', '2025')
print(my_new_car.get_descriptive_name())

my_new_car.update_odometer(23500)
my_new_car.read_odometer()

my_new_car.increment_odometer(100)
my_new_car.read_odometer()